1OM2

SOLUTION NMR STRUCTURE OF THE MITOCHONDRIAL PROTEIN IMPORT RECEPTOR TOM20 FROM RAT IN A COMPLEX WITH A PRESEQUENCE PEPTIDE DERIVED FROM RAT ALDEHYDE DEHYDROGENASE (ALDH)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TARGET FUNCTION 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis of presequence recognition by the mitochondrial protein import receptor Tom20.

Abe, Y.Shodai, T.Muto, T.Mihara, K.Torii, H.Nishikawa, S.Endo, T.Kohda, D.

(2000) Cell 100: 551-560

  • DOI: 10.1016/s0092-8674(00)80691-1
  • Primary Citation of Related Structures:  
    1OM2

  • PubMed Abstract: 
  • Most mitochondrial proteins are synthesized in the cytosol as precursor proteins with a cleavable N-terminal presequence and are imported into mitochondria. We report here the NMR structure of a general import receptor, rat Tom20, in a complex with a presequence peptide derived from rat aldehyde dehydrogenase ...

    Most mitochondrial proteins are synthesized in the cytosol as precursor proteins with a cleavable N-terminal presequence and are imported into mitochondria. We report here the NMR structure of a general import receptor, rat Tom20, in a complex with a presequence peptide derived from rat aldehyde dehydrogenase. The cytosolic domain of Tom20 forms an all alpha-helical structure with a groove to accommodate the presequence peptide. The bound presequence forms an amphiphilic helical structure with hydrophobic leucines aligned on one side to interact with a hydrophobic patch in the Tom20 groove. Although the positive charges of the presequence are essential for import ability, presequence binding to Tom20 is mediated mainly by hydrophobic rather than ionic interactions.


    Organizational Affiliation

    Department of Structural Biology, Biomolecular Engineering Research Institute, Suita, Osaka, Japan.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (MITOCHONDRIAL IMPORT RECEPTOR SUBUNIT TOM20)A95Rattus norvegicusMutation(s): 1 
Gene Names: Tomm20
Membrane Entity: Yes 
UniProt
Find proteins for Q62760 (Rattus norvegicus)
Explore Q62760 
Go to UniProtKB:  Q62760
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (MITOCHONDRIAL ALDEHYDE DEHYDROGENASE)B11N/AMutation(s): 1 
EC: 1.2.1.3
Membrane Entity: Yes 
UniProt
Find proteins for P11884 (Rattus norvegicus)
Explore P11884 
Go to UniProtKB:  P11884
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: LOWEST TARGET FUNCTION 
  • OLDERADO: 1OM2 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-02-02
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance